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Sunset on Mars
On May 19th, 2005, NASA's Mars Exploration Rover Spirit captured this view as the Sun sank below the rim of Gusev crater on Mars. This Panoramic Camera (Pancam) mosaic was taken around 6:07 in the evening of the rover's 489th martian day, or sol. In this image, the bluish glow in the sky above the Sun would be visible to us if we were there, but an artifact of the Pancam's infrared imaging capabilities is that with this filter combination the redness of the sky farther from the sunset is exaggerated compared to the daytime colors of the martian sky. Because Mars is farther from the Sun than the Earth is, the Sun appears only about two-thirds the size that it appears in a sunset seen from the Earth. The floor of Gusev crater is visible in the distance, and the Sun is setting behind the wall of Gusev some 80 km (50 miles) in the distance. This mosaic is yet another example from MER of a beautiful, sublime martian scene that also captures some important scientific information. Specifically, sunset and twilight images are occasionally acquired by the science team to determine how high into the atmosphere the martian dust extends, and to look for dust or ice clouds. The Mars Exploration Rovers began their mission on the surface of Mars in January 2004. They continued exploring for over two years. Image Credit: NASA/JPL/Texas A&M/Cornell Download Wallpaper: 800 x 600 | 1024 x 768 Return to galleries: Earth | Solar System | Stars & Galaxies | Spaceflight & Spacecraft
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